Calorie Count on Workout summary

Why is the calorie count so high on workout summaries. It seems far too unrealistically high?

Hey @rich-mc, the calorie count is calculated from the workout duration, and if you shared that information with Gym Hero, your gender and weight as per apple’s Health app. Maybe the start time (and date!) or the end time are not set correctly, and the workout is too long and therefore calculates too many calories?